Fusible adherent and method of making the same



'or the sap of various trees, such as the willow tree, or a by-productof these substances and in order to attain such by-product, I

UNITED. STATES;

rem OFFICE,

.LERANK n.- nnvrs'or NEW YORK, 1v. $1., assrenonor om n-t rorRAivcIs n.

oouennnv, on NEW YORK, N. Y.-

FUSIIBLE ADIBEERENT AND mention on Maxine THE SAME.

1T0 Drawing.

To all whom it may concern 1 Be it known that 1,; FRANK H. DAVIS, acitizen of the United States, and residing at New York, in the county ofBronx and State of New York, have invented certain new and usefulImprovements. in Fusible Adherents and Methods of -Making the Same, ofwhich the following is a specification, such as will enable thoseskilled in the art to which it appertains to make. and use the same.

This invention relates to fusible adherents used in securing gold leafto strips, ribbons, tapes or sheets of paper or other protectivematerial, or in the manufacture of what is known as. mounted or backedgold leaf which is usually made up into rolls of gold leaf tape, such asis shown, described and claimed in a prior patent granted to Davis andSchumacher, Jan. 12, 1915, No. 1,124,869; and the object of thisinvention is to produce by an improved method a fusible adherent forsecuring gold leaf'to the paper strip'or tape upon which it is mounted,which will possess all the required adhesive and fusible qualities ofadherents of this class now in use but will be free of all greasy orfatty substances that are now 'common in or forming part of fuslble ad-'pearances of the gold leaf when applied to a suitable backing strip dueto the presence of herents thus eliminating shaded or'dull aptoo muchgreasy or fatty substances in the fusible adherent employed; and afurther object of the invention consists in an improved method ofproducing the desired ad- "herent by treating a suitable product toproduce by-products thereof, one of which is used in manufacturing saidadherent while the other of which may be diluted and used as a sizingfor the gold leaf after it has been applied to, or mounted on, asuitable backing strip in the usual manner, and with these andother-objects in view'the invention consists in a fusible adherent ofthe class and for the purpose specified, and in the method of producingit' as hereinafter described'and claimed.

My improved fusible adherent may be made from what is known as whiteshellac,

treat one of these substances, as for example, white shellac by takingone quart of 'white stance appears on the top Specification of LettersPatent. P t nt p 1921 Application filed February 4,.1919. ;S'eria1 No.274,856.

shellac to which is added two quarts of ammonia'and one pound of tablesalt. These mgredlentsare placed in a suitable vat'or container andboiled slowly for about seven hours, during which time water is added tothe solution at intervals to keep the same in two hours a darksubstance'will be noted on the top of'the liquid, this substance isshellac m a very thin and sticky state and 1s skimmed off and'placed ina suitable contalner and forms one of the by-prdoucts of the orlglnalwhite shellac employed and which 1s hereafter described. The abovedescribed operation of skimming the sticky shellac fromthe top of thesolution is repeated at about one-half to three-quarter hourlntervalskuntil but little of said subof the solution.

At the end of the period of about seven hours of slow boiling thesolution, as above described, a hard substance or'precipitate will benoticed in the 'bottom'of the vat or container, this substance is theprincipal product and is removed and allowed to thoroughly dry, afterwhich it is crushed lnto the form' of powder in any desired manner. i

After attaining the principal product of"- she'llac .in the form of ahard substance which is made into ,a powder as above. de-

scribed, I use said powder :in forming or .producingmy improved fusibleadherent in the following proportions ;3 ounces of the inpowderedprincipal product of shellac form; 1 gallonof benzin.

In producing the-desired solution, the above proportions of the powderedproduct of shellac and benZ in-are placed in a suitable double boilerand heated' u'ntil all of the solid orpowdered "substance has beenthoroughly dissolved by the benzin, and this produces the fusibleadherent which I use 'in'attaching gold leaf *tofafstrip'or sheet ofsuitable paper, and this product while having the requiredadhering'qualities is free from all greasy-or fatty substances whichtend to discolor or effect th brightness'of the gold-leaf. '1' i In'theoperation of applying or attaching gold leaf'to: one face of a strlp orsheet of paper, the fusible adherent produced in the manner abovedescribed which is constantly kept in a heated state, is applied to theface of the strip or sheet of paper, after which the gold leaf isapplied to the fusible adherenton said strip in the usual manner and ris then allowed to dry.

I also preferably use the first named byproduct of the shellacconsisting of the thin sticky shellac substance, which is skimmed fromthe top of the shellac solution as a size or sizing by diluting it witha predetermined amount of alcohol, and this solution is applied to theface of the gold leaf when the fusible adherent for connecting the samewith a strip or sheet of paper is dried. From the foregoing it will beseen that both the by-product and principal product are used in themanufacture of mounted or backed gold leaf, but it Will also beunderstood that my invention is not limited to the 7 gives the bestresults.

In the use of a strip or sheet of paper to one face of which gold leafhas been attached by my improved fusible adherent as well as the shellacsizing formed by the by-product of shellac above set out, in the goldleafing of leather goods of various kinds and classes, paper, cloth orother surfaces, by the use of what is known as hot dies or stamps, thegold leaf will be freed from the strip or sheet of paper to which it isattached by reason of the fusible adherent employed, and the sizing onthe face of the gold leaf will be rendered plastic whereby theimpressions of the die, or the figures thereof, will transfercorresponding impressions or figures of the gold leaf onto a suitablesurface, and will adhere tosaid surface by the heated sizing on saidportions of'gold leaf. '50,

' method of transferring the gold leaf from a strip or sheet to which itis attached by my My invention is not limited to any specific improvedfusible adherent, as this may be performed in the usual or any desiredman ner, and while Ihave described one method of producing a fusibleadherent which will have all the desired qualities of adherents'of theclass specified but which is free from greasy or fatty substances, fromone product namely shellac,- it will be understood that my invention isnot limited to thisspecific method or product as I have,found that someotherresinous substance may be treated to produce a product which wouldhave the deslred adherent qualities as well as the fusiblequalities asthe hereindescribed fusi ble adherent, and again my invention is notlimited to the specific proportions or amounts of the variousingredientsemployed in the production of my fusible adherent, andvarious changes in and modifications of these details of my inventionmay be made,

-puI11'lposes herein described.

aving fully described my invention,

what I claim as new and desire to secure by Letters Patent, is

1. The herein described method of-'producing a fusible adherent whichconsists in first treating white shellac to obtain a principal productthereof by mixing one quart of shellac with two quarts of ammonia andone pound of salt and boiling this solution until a hard product in theform of a sediment is obtained, separating said product from thesolution, drying the same and then crushing it into powder form andmixing three ounces of the powdered product of shellac with one gallonof'benzin, substantially as described. I

2. The herein described method of :producing a fusible adherent andsizing used in the manufacture of mounted gold leaf which consists infirst'treating white shellac to obtain a by-productand principal productthereof by mixing one quart of shellac with two quarts of ammonia andone'pound.

of salt and boilingthis-solution to obtain a sticky liquid by productwhich is used as a sizing and a solid product, separating the last namedproduct from the solution, drying the same and grinding it into powderedform,and mixing three ounces ofsaid powdered product of shellac with agallon of benzin to form the fusible adherent;

3. The herein described method 'ofiproducing a fusible adherent andsizingused in the manufacture of mounted gold leaf which consists infirst treating white shellac to obtain a by-product and principalproduct thereof by mixing one quart of said shellac with two quarts ofammonia and one pound of salt, boiling this solution to obtain a stickyliquid by-productwhich is used as a slzing and a solid product,separating the .last named product from the solution, drying the sameand grinding it into powdered form, mixing three ounces of said powderedproduct with a gallon of benzin to form the fusible adherent anddiluting the first named liquid by-product of shellac in alcohol to formthe desired sizing. 4

Y ducing a fusible adherent adapted for use in the manufacture ofmounted gold leaf,

which consists in boiling shellac with a suitable solution of sodiumchlorid in ammonia until a precipitate is formed on the bottom of thevessel and removing said precipitate, said precipitate when dried,crushed and dissolved in a suitable solvent forming said fusibleadherent.

5. The herein described method of producing a fusible adherent and sizeadapted for use in the manufacture of and use of mounted gold leaf whichconsists in boiling shellac wlth a solution of sodium chlorid' inammonia, removing from time to time the-scum formed on the surface ofthe liquid and said'scum when dissolved in a suitable solvent formingthe said size, thereafter continuing the boiling until a precipitate isformed on the bottom of the vessel and removing said precipitate, saidrecipitate when dried, crushed and dissolve in a suitable solventforming the said fusible adherent.

6. The herein described method of producing a fusible adherent for usein the manufacture of mounted gold leaf which consists in boilingshellac or equivalent resinous product with a solution of sodium chlo-'rid in ammonia until a precipitate is formed in thebottom of the vessel,separating said precipitate from the solution, then drying,

crushing and dissolving the same in a su1table solvent to form saidfusible adherent.

7. A fusible adherent of the class described derived from shellacorequivalent resinous product by boiling said product with ammoniumhydroxid and sodium chlorid solution until a precipitate is formed, freefrom greasy or fatty substances and having fusible properties suitablefor transferring gold leaf from its backing to the object upon which itis to be attached without discoloration of said gold leaf.

In testimony that I claim the foregoing as my invention I have signed myname in presence of the subscribing witnesses this 3rd day of February,1919. I

FRANK l-I. DAVIS.

Witnesses:

C. E. MULREANY, H. E. THOMPSON.

